What two numbers multiply to -172 and add up to 39?




Here we answer the question: "What two numbers multiply to -172 and add up to 39?"

The answer to your question is:

-4 and 43


Below we illustrate and prove that -4 and 43 multiply to -172 and add up to 39:

-4 × 43 = -172
-4 + 43 = 39

Are you asking because you are trying to figure out how to factor the following quadratic equation?

x2 + 39x - 172 = 0

If so, the solution to factor the quadratic equation above is:

(x - 4 ) (x + 43)

To summarize, since -4 and 43 multiply to -172 and add up 39, you know that the following is true:

x2 + 39x - 172 = (x - 4 ) (x + 43)


Multiply To One Number and Add Up To Another
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